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Статті в журналах з теми "Discharge chamber"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 липня 2025

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1

Bulat P. V., Volkov K. N., Esakov I. I., Lavrov P.B., and Ravaev A. A. "Electrodynamic model of combustion chamber using subcritical streamer discharge to ignite fuel mixture." Technical Physics 92, no. 5 (2022): 570. http://dx.doi.org/10.21883/tp.2022.05.53672.1-22.

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Анотація:

Various electrodynamic models of a combustion chamber, in which an initiated subcritical streamer discharge is used to ignite a combustible mixture, are considered. To localize the discharge in the working chamber, discharge initiators are used based on half-wave electromagnetic vibrators with resonant properties. The dependences of the structure of the electric fields that form the discharge on the geometric parameters of the discharge initiator are obtained on the basis of numerical calculations, and the issues of matching the chamber with the radiation generator are considered. Comparison o

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2

Булат, П. В., К. Н. Волков, И. И. Есаков, П. Б. Лавров та А. А. Раваев. "Электродинамическая модель камеры сгорания, использующей инициированный подкритический стримерный разряд для поджигания топливной смеси". Журнал технической физики 92, № 5 (2022): 676. http://dx.doi.org/10.21883/jtf.2022.05.52371.1-22.

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Анотація:

Various electrodynamic models of a combustion chamber, in which an initiated subcritical streamer discharge is used to ignite a combustible mixture, are considered. To localize the discharge in the working chamber, discharge initiators are used based on half-wave electromagnetic vibrators with resonant properties. The dependences of the structure of the electric fields that form the discharge on the geometric parameters of the discharge initiator are obtained on the basis of numerical calculations, and the issues of matching the chamber with the radiation generator are considered. Comparison o

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3

Kosenkov, V.M. "Influence of Vapor-Gas Cavity on Pressure Field in Closed Discharge Chamber with Rigid Walls." Электронная oбработка mатериалов 3-4, no. 56 (2020): 42–52. https://doi.org/10.5281/zenodo.3970429.

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The pressure field in discharge chambers of a limited volume, with rigid walls, very often has a great influence on the efficiency of technological processes; therefore, its determination is an urgent task. As a result of the electric discharge in the liquid filling of the discharge chamber, in it, a cavity with a higher compressibility is formed than the liquid in the chamber. At the discharge stage, this cavity is filled with non-ideal plasma, and after discharge, liquid vapor and gases are dissolved in it (vapor-gas cavity). Its pulsations form a pressure field in the discharge chamber. The

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4

Awoji, Michael O., Audu D. Onoja, and Mathias I. Echi. "Synthesis of Graphene via ARC Discharge and Its Characterization: A Comparative Approach." East European Journal of Physics, no. 1 (March 2, 2023): 252–57. http://dx.doi.org/10.26565/2312-4334-2023-1-34.

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Herein, few layer graphene was synthesize using two arc discharge chambers of different volumes to ascertain the influence of chamber size on the quality and yield of graphene. In both arc discharge chambers (A and B), graphite rods were ignited at arc current of 200 A and pressure of 500 Torr to produce vaporized carbon atoms which were deposited on the chamber wall. The synthesized graphene was characterized using the combined effect of UV spectroscopy, X-ray diffraction, Raman spectroscopy, scanning electron spectroscopy and transmission electron spectroscopy. It was observed that, an incre

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5

Wang, Pengcheng, Bangle Zhu, Jiaming Liu, et al. "Influence of the edge effect of the solenoid magnetic field on the discharge process of magnetron sputtering in long and narrow chambers." Journal of Instrumentation 19, no. 09 (2024): P09027. http://dx.doi.org/10.1088/1748-0221/19/09/p09027.

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Abstract The fourth-generation light source or future particle accelerators have compact vacuum systems, resulting in a small flow conductance of the beam chamber. The development of NEG (Non-Evaporable Getters) films technology with distributed pumping is a good solution. This technology can obtain a pressure distribution with a small pressure gradient and an ultra-high vacuum of 10-8 Pa inside the vacuum chambers. In the magnetron sputtering process for NEG coating, the inhomogeneity of the magnetic field at the edge of the solenoid is a key parameter for affecting the stability of the magne

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6

Косенков, В. М., and В.М. Бычков. "Influence of some axisymmetric stepped shapes of discharge chambers on effectiveness of electrohydraulic forming." Elektronnaya Obrabotka Materialov 54 (February 15, 2018): 63–69. https://doi.org/10.5281/zenodo.1168349.

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A mathematical simulation of the electrohydraulic forming using some types of stepped axisymmetric discharge chambers is performed. The mathematical model was tested on the base of experimental data obtained using the optical method of measuring the deflection of a plate. It is shown that the change in the shape of the discharge chamber can significantly affect the efficiency of electrohydraulic forming with equal parameters of the discharge circuit. It is found that the discharge chamber of the conical shape had the highest forming efficiency than all other discharge chambers considered in th

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7

Bereka, V. O., and I. P. Kondratenko. "MATCHING OF COMPATIBLE WORK OF SHORT HIGH-VOLTAGE PULSES OF TENSION GENERATOR AND WATER TREATMENT CHAMBER BY DINT OF PULSE BARRIER DISCHARGE." Praci Institutu elektrodinamiki Nacionalanoi akademii nauk Ukraini 2021, no. 60 (2021): 21–27. http://dx.doi.org/10.15407/publishing2021.60.021.

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A technique for calculating the parameters of a magnetic switch as an element of a generator of short high-voltage pulses of tension to coordinate its compatible work with a water treatment chamber by dint of pulse barrier discharge is shown. The expediency and efficiency of using such a switch as an element that, by shunting, the discharge chamber, discharges the barrier to the arrival of the next voltage pulse has been confirmed. It is proved that with the accepted geometrical dimensions of the discharge chamber and the amplitude of the pulse voltage, provided that the magnetic switch is pre

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8

Kosenkov, V. "Influence of Vapor-Gas Cavity on Pressure Field in Closed Discharge Chamber with Rigid Walls." Elektronnaya Obrabotka Materialov 57, no. 3 (2021): 102–16. http://dx.doi.org/10.52577/eom.2021.57.3.102.

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Анотація:

The pressure field in discharge chambers of a limited volume with deformable walls very often has a great influence on the efficiency of technological processes of deformation of sheet alloys; therefore, its determination is an urgent task. As a result of an electric discharge in the liquid filling the discharge chamber, in it, a cavity with a higher compressibility is formed than the liquid in the chamber. At the stage of the discharge, this cavity is filled with non-ideal plasma, and after the discharge, with liquid vapor and gases dissolved in it (vapor-gas cavity). Its pulsations form a pr

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9

Bosyakov, M. N., and A. A. Kozlov. "Energy and gas dynamic characteristics of ionization nitrogen installations of industrial type." Proceedings of the National Academy of Sciences of Belarus, Physical-Technical Series 63, no. 3 (2018): 342–50. http://dx.doi.org/10.29235/1561-8358-2018-63-3-342-350.

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The work provides the analysis of power characteristics of the industrial equipment – ionic nitriding applications – with different types of vacuum chambers – with hot and cold walls. The calculations results and experimental researches of thermal balance of the system “melt-wall chamber” at the process of plasma nitration for industrial applications are given. The work examines the influence of heat-shielding screens quantity in the applications with cold walls on the internal screen temperature and power of thermal losses at warming up parts melt and at its isothermal endurance. It has been

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10

Galli, G., H. Hamrita, C. Jammes, et al. "Characterization and localization of partial-discharge-induced pulses in fission chambers designed for sodium-cooled fast reactors." EPJ Web of Conferences 170 (2018): 03002. http://dx.doi.org/10.1051/epjconf/201817003002.

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During the operation of the Superphenix and Phenix reactors, an aberrant electrical signal was detected from the fission chambers used for neutron flux monitoring. This signal, thought to be due to partial electrical discharge (PD) is similar to the signal resulting from neutron interactions, and is generated in fission chambers at temperatures above 400 °C. This paper reports work on the characterization and localization of the source of this electrical signal in a High Temperature Fission Chamber (HTFC). The relation between the shape of the PD signal and various parameters (nature and press

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11

Budin, A. V., A. A. Bogomaz, V. A. Kolikov, P. G. Rutberg, and A. F. Savvateev. "Multipulse discharge in the chamber of electric discharge launcher." IEEE Transactions on Magnetics 35, no. 1 (1999): 189–91. http://dx.doi.org/10.1109/20.738401.

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12

Mujic, E., A. Kovacevic, N. Stosic, and I. K. Smith. "The influence of port shape on gas pulsations in a screw compressor discharge chamber." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 222, no. 4 (2008): 211–23. http://dx.doi.org/10.1243/09544089jpme205.

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Gas pulsations in suction and discharge chambers are a significant source of noise in screw compressors. This paper shows how such effects in the discharge chamber are influenced both by the compressor operating conditions and its geometric characteristics. An area function is identified for the discharge port as an important parameter influencing the gas pulsations and it is shown how their amplitude can be reduced by optimization of the port shape.

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13

Murashov, Iu V., V. Ya Frolov, D. Uhrlandt, S. Gortschakow, D. V. Ivanov, and A. D. Sivaev. "Analysis of Arc Processes in Multi-chamber Arrester for Lightning Protection at High-voltage Overhead Power Lines." PLASMA PHYSICS AND TECHNOLOGY 4, no. 2 (2017): 124–28. http://dx.doi.org/10.14311/ppt.2017.2.124.

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Nowadays multi-chamber arresters are widely distributed as devices of lightning protection of overhead power lines. A mathematical modelling of processes in the discharge chamber of multichamber arrester is necessary to carry out in order to improve its breaking capacity. A three-dimensional mathematical transient model of thermal, gas-dynamic and electromagnetic processes taking place in the discharge chamber of multi-chamber arrester is presented in the article. Basic assumptions, model equations, a computational domain and the boundary conditions are described. Plasma turbulence is taken in

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14

Kawashima, Kenji, Toshiharu Kagawa, and Toshinori Fujita. "Instantaneous Flow Rate Measurement of Ideal Gases." Journal of Dynamic Systems, Measurement, and Control 122, no. 1 (1996): 174–78. http://dx.doi.org/10.1115/1.482439.

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In this paper, a chamber called an “Isothermal Chamber” was developed. The isothermal chamber can almost realize isothermal condition due to larger heat transfer area and heat transfer coefficient by stuffing steel wool in it. Using this chamber, a simple method to measure flow rates of ideal gases was developed. As the process during charge or discharge is almost isothermal, instantaneous flow rates charged into or discharged from the chamber can be obtained measuring only pressure in the chamber. The steady and the unsteady flow rate of air were measured by the proposed method, and the effec

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15

Trotsenko, Yevgeniy, Julia Peretyatko, Olexandr Protsenko, and Mandar Madhukar Dixit. "Effect of vacuum drying the insulation pressboard on partial discharge characteristics under ripple voltage conditions." Technology audit and production reserves 2, no. 1(64) (2022): 28–33. http://dx.doi.org/10.15587/2706-5448.2022.256564.

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The object of the research is partial discharges arising in a sample of the insulation pressboard. In most modern high-voltage direct current transmission schemes based on voltage-source converters six-pulse or twelve-pulse converters are used. The signal waveform on the direct current voltage side of a high-voltage direct current transmission is not pure direct current voltage and it has alternating current component. Since the partial discharge activity under distorted voltage is much different than that under pure direct current voltage, voltage ripples and voltage harmonics are the subject

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16

Hiatt, Jeffrey M., and Paul J. Wilbur. "Ring cusp discharge chamber performance optimization." Journal of Propulsion and Power 2, no. 5 (1986): 390–97. http://dx.doi.org/10.2514/3.22919.

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17

Yevgeniy, Trotsenko, Peretyatko Julia, Protsenko Olexandr, and Madhukar Dixit Mandar. "Effect of vacuum drying the insulation pressboard on partial discharge characteristics under ripple voltage conditions." Technology audit and production reserves 2, no. 1(64) (2022): 28–33. https://doi.org/10.15587/2706-5448.2022.256564.

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Анотація:

<em>The object of the research is partial discharges arising in a sample of the insulation pressboard. In most modern high-voltage direct current transmission schemes based on voltage-source converters six-pulse or twelve-pulse converters are used. The signal waveform on the direct current voltage side of a high-voltage direct current transmission is not pure direct current voltage and it has alternating current component. Since the partial discharge activity under distorted voltage is much different than that under pure direct current voltage, voltage ripples and voltage harmonics are the sub

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18

Nishimura, Seigo, Y. Hayashi, Tsuneo Suzuki, et al. "Pulsed Wire Discharge Apparatus for Mass Production of Nanosized Powders." Advanced Materials Research 11-12 (February 2006): 315–18. http://dx.doi.org/10.4028/www.scientific.net/amr.11-12.315.

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A pulsed wire discharge (PWD) apparatus for mass production of nanosized powders was developed. The apparatus had a wire feeder, and could prepare 1.5 g of Cu powder in 200 sec. The mean surface diameter of Cu powder was 86 nm. The particle size distribution of the powder prepared by 100 discharges was increased than that by one discharge. In addition, the median diameter of the powder after the 100 discharges was larger than that by one discharge. A part of the nanosized powders in production chamber of the apparatus would be grown by the deposition of plasma or vapor formed by the next disch

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19

Hu, Xiao Yang, and Jun Yao. "Research on Dynamic of Wall Loading of the Discharge Chamber under Electro-Hydraulic Breakdown in Liquid." Advanced Materials Research 490-495 (March 2012): 1844–47. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.1844.

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The underwater hydraulic discharge chamber is basic tools and method of research for many ocean issues. In this paper analyzed physical process and mechanical state of hydraulic discharge chamber, into account plasma, streamer and cavitation. The results of simulation and calculation compared with empirical data. On based the results analyzed the factors of effect of the underwater state and put forward improvement conditions of structural design for discharge chamber.

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20

Kosenkov, V. M. "Influence of the Parameters of Conical Cavity of the Discharge Chamber on the Efficiency of Electrohydraulic Stamping." Elektronnaya Obrabotka Materialov 58, no. 3 (2022): 55–61. http://dx.doi.org/10.52577/eom.2022.58.3.55.

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Mathematical modeling of the electrohydraulic sheet metal stamping process using discharge chambers with a conical cavity was carried out. The influence of the parameters of the conical cavity of the discharge chamber on the plastic deformation energy of the plate and the shape of its deflection was investigated. It was determined that the height of the cone, a small radius of its upper base, and the location of the discharge channel near the upper base increase the plastic deformation energy of the plate to the greatest extent.

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21

Bereka, V. O., I. V. Bozhko, and I. P. Kondratenko. "RESEARCH OF ENERGY EFFICIENCY OF PROCESSING BY PULSE BARRIER DISCHARGE OF WATER IN A DROP-FILM STATE." Tekhnichna Elektrodynamika 2021, no. 3 (2021): 50–57. http://dx.doi.org/10.15407/techned2021.03.050.

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The energy efficiency of a pulsed barrier discharge in air was investigated when it treated a model water sample in a drop-film state containing an organic dye (methylene blue) with an initial concentration of 50 mg/l. The water consumption was 4 l / min, the characteristic droplet diameter was ~1 mm. Water treatment was carried out in a coaxial discharge chamber with a gas gap of 3.2 mm and additionally in an ozonation chamber. The discharge was generated by short ~ 100 ns voltage pulses of ≈26 kV, which provided a current density with an amplitude of ≈1.3 A/cm2 and a pulse energy of ≈ 140 mJ

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22

Calzaferri, S. "Study of discharges in the CMS GEM GE1/1 station with LHC beam." Journal of Instrumentation 18, no. 06 (2023): C06016. http://dx.doi.org/10.1088/1748-0221/18/06/c06016.

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Abstract The Large Hadron Collider (LHC) and the experiments installed there are being upgraded for the High Luminosity LHC project that will provide a greatly enlarged data sample in the search for physics beyond the Standard Model. During Long Shutdown 2, from 2018 to the first months of 2022, some of these upgrades were completed. In particular, the muon spectrometer of the CMS experiment was upgraded with installation of the GE1/1 detector station, based on Gas Electron Multiplier (GEM) technology. This station is positioned in the endcap region of the CMS muon system and covers the pseudo

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23

Akhatov, M. F., R. R. Kayumov, R. R. Mardanov, I. I. Saifutdinova, and K. I. Khazeev. "Diagram of the plasma torch discharge chamber." Journal of Physics: Conference Series 1870, no. 1 (2021): 012024. http://dx.doi.org/10.1088/1742-6596/1870/1/012024.

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24

He Wusheng, 贺武生, 孙安邦 Sun Anbang, 毛根旺 Mao Genwang, 霍超 Huo Chao, and 陈茂林 Chen Maolin. "Numerical simulation of ion thruster discharge chamber." High Power Laser and Particle Beams 22, no. 12 (2010): 3020–24. http://dx.doi.org/10.3788/hplpb20102212.3020.

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25

Abgaryan, V. K., A. V. Melnikov, A. Yu Kupreeva, and O. D. Peisakhovich. "Geometry Design Optimization of High-Frequency Ion Thrusters and Ion Sources." Поверхность. Рентгеновские, синхротронные и нейтронные исследования, no. 5 (May 1, 2023): 103–12. http://dx.doi.org/10.31857/s1028096023050023.

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The article presents the results of the computational determination of the optimal design geometry of a certain type of quasi-neutral plasma source. The scheme of an ion source with an inductive plasma discharge formed and maintained by a radio-frequency electromagnetic field in a MHz frequency range is considered. The surface profiles optimization of the main design units – namely, gas discharge chamber and ion extraction system – was carried out via computational modelling. Calculations were carried out using the previously developed engineering model of inductive discharge in plasma. The op

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26

Guerrato, D., J. M. Nouri, N. Stosic, C. Arcoumanis, and I. K. Smith. "Flow measurements in the discharge port of a screw compressor." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 222, no. 4 (2008): 201–10. http://dx.doi.org/10.1243/09544089jpme200.

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The angle-resolved mean velocity and turbulence characteristics of axial air flow within the rotors and discharge chambers of a screw compressor have been measured, using a laser Doppler velocimeter with high spatial and temporal resolution. The measurements were made through special transparent windows fixed in the compressor casing and in the pipe immediately above the discharge port. Results were obtained at a speed of 1000 r/min, a discharge pressure 1 bar, and a temperature of 57 °C. The flow interaction between the rotors and the discharge chamber was established as well as the spatial v

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27

Pleskun, H., T. Jünemann, and A. Brümmer. "Validation of inhomogeneous chamber states in rotary positive displacement vacuum pumps." IOP Conference Series: Materials Science and Engineering 1267, no. 1 (2022): 012010. http://dx.doi.org/10.1088/1757-899x/1267/1/012010.

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Chamber model simulation is a common approach to simulate rotary positive displacement vacuum pumps. Therefore the pump is abstracted into working chambers and connecting clearances, whereby the clearance leakages can be identified as the major loss mechanism in such machines. The clearance mass flow rates are calculated with respect to the thermodynamic states in the adjacent chambers, which are inhomogeneous for rarefied gases due to the movement of the rotors which causes a pressure gradient within the chamber. This effect increases with higher Knudsen numbers, because of the increasingly d

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28

Macioszczyk, Jan, Monika Lenartowicz, Karol Malecha, and Leszek J. Golonka. "Design and Fabrication of Ceramic Microsystem Utilizing Glow Discharge for Analysis of Liquid Mixtures." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2016, CICMT (2016): 000080–84. http://dx.doi.org/10.4071/2016cicmt-wa11.

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Abstract We present the results of our work on design and fabrication of Low Temperature Co-fired Ceramics (LTCC) Electrolyte as a Cathode Discharge (ELCAD) chip. It consists of plasma chamber filled with working gas (for instance helium). The fluidic channel with sample is placed below the chamber. Discharge ignites between anode and electrolyte cathode through aperture between microfluidic channel and plasma chamber. To avoid filling the chamber with fluid, channel and waste outlet should have proper geometry. We have checked our design and fabricated prototypes in DuPont system. External el

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29

Frolov, V., D. Ivanov, A. Sivaev, and A. Chusov. "Development of a Two-Temperature Mathematical Model of Plasma Processes in a Discharge Chamber of a Multi-chamber Arrester Operating in Conditions of Mountain Areas." PLASMA PHYSICS AND TECHNOLOGY 6, no. 2 (2019): 135–39. http://dx.doi.org/10.14311/ppt.2019.2.135.

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This article is devoted to a development of a mathematical model of plasma processes in a discharge chamber of a multi-chamber arrester operating under reduced pressure. The results obtained using this model will make it possible to develop recommendations on modifying the design of multi-chamber arresters for operation in conditions of mountain areas.<br />A composition, thermodynamic and transport properties of plasma for the two-temperature model were calculated on the basis of the data on the materials of the discharge chamber and on the basis of the experiments performed earlier.&lt

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30

Madveika, S., S. Bordusau, A. Zemlyakov, and M. Lushakova. "Investigation of the Method of Dynamic Microwave Power Redistribution in a Resonator-Type Plasmatron." PLASMA PHYSICS AND TECHNOLOGY 6, no. 2 (2019): 107–10. http://dx.doi.org/10.14311/ppt.2019.2.107.

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The investigation results of a dynamic microwave power fmicrowave = 2, 45 ± 0,05 GHz redistribution in a 9000 cm<sup>3</sup> reaction-discharge chamber of a microwave resonator-type plasmatron are presented. In order to redistribute the microwave power, a rotating metallic four-blade L-form dissector placed above the reaction-discharge chamber was used. The microwave power in the local points at the axis of the chamber with plasma and without it was measured applying the "active probe" method. During the experiments the chamber contained silicon plates. Periodical interchange of ma

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31

NIEMANN, C., D. PENACHE, A. TAUSCHWITZ, et al. "Diagnostics of discharge channels for neutralized chamber transport in heavy ion fusion." Laser and Particle Beams 21, no. 1 (2003): 13–15. http://dx.doi.org/10.1017/s0263034602211039.

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The final beam transport in the reactor chamber for heavy ion fusion in preformed plasma channels offers many attractive advantages compared to other transport modes. In the past few years, experiments at the Gesellschaft für Schwerionenforschung (GSI) accelerator facility have addressed the creation and investigation of discharge plasmas, designed for the transport of intense ion beams. Stable, self-standing channels of 50 cm length with currents up to 55 kA were initiated in low-pressure ammonia gas by a CO2-laser pulse along the channel axis before the discharge is triggered. The channels w

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32

Makhonin, Mykola. "Determination of dependence of voltage of the ozone generator discharge chamber from external factors and design of discharge chamber." Bulletin of the National Technical University «KhPI» Series: New solutions in modern technologies, no. 9(1285) (April 22, 2018): 57–61. http://dx.doi.org/10.20998/2413-4295.2018.09.08.

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33

Komarov, Alexander, and Jahongir Azamov. "Processing of experimental data describing internal deflagration explosions." E3S Web of Conferences 410 (2023): 02042. http://dx.doi.org/10.1051/e3sconf/202341002042.

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This article is devoted to issues related to experimental studies of internal deflagration explosions or emergency explosions occurring inside buildings and premises. In internal emergency explosions, the main role in reducing the explosive pressure to a safe level is played by discharge openings blocked by safety structures (SS). As discharge openings, windows are often used, covered with glazed window blocks, or opened explosion venting structures (EVS). The article deals with processing experimental data obtained in the study of deflagration explosions occurring inside buildings and premise

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34

Isupov, M. V. "Distributed ferromagnetic enhanced inductive plasma source for plasma processing." Journal of Physics: Conference Series 2119, no. 1 (2021): 012115. http://dx.doi.org/10.1088/1742-6596/2119/1/012115.

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Abstract New experimental data on the plasma density profiles have been obtained for a low-frequency (100 kHz) distributed ferromagnetic enhanced inductive plasma source at different locations of inductive discharges. An ability to control the plasma density profiles in a large gas discharge chamber in order to achieve a uniform treatment of a substrate is demonstrated. The differences between the obtained results and literature data for a distributed ferromagnetic enhanced inductive plasma source combined with a radio-frequency inductive discharge are discussed.

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35

Malyushevskaya, A.P., and P.P. Malyushevskij. "Optimization of Fine Electric-Discharge Dispersion." Elektronnaya Obrabotka Materialov 55 (3) (June 15, 2019): 51–57. https://doi.org/10.5281/zenodo.3244414.

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The results of investigations on fine dispersion of rare-earth elements on             pre-crushed oxides by electrical discharges in aquatic environment are given. A possibility of obtaining oxide particles with a size less than one micrometer is shown, including from large blocks of previously coagulated oxide particles. A feasibility is shown of choosing such an interposition of zones generating pressure waves and pulsed hydraulic currents, at which local regions of intense electric-discharge cavitation arise, providing dispersion,

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36

Kim, Sungjin, Zhuwen Zhou, M. A. Lieberman, and A. J. Lichtenberg. "Relaxation oscillations in a capacitive discharge chamber connected to a peripheral grounded chamber." Journal of Applied Physics 100, no. 10 (2006): 103302. http://dx.doi.org/10.1063/1.2384776.

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37

Кулагин, Сергей Николаевич. "ЗОНДОВІ ТА СПЕКТРАЛЬНІ ДОСЛІДЖЕННЯ МАЛОПОТУЖНОГО ЕЛЕКТРОРЕАКТИВНОГО ХОЛЛОВСЬКОГО ДВИГУНА". Aerospace Technic and Technology, № 5 (7 грудня 2017): 66–72. http://dx.doi.org/10.32620/aktt.2017.5.09.

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The work is devoted to the study of a low-power Hall Effect Thruster. The currency of developing and increasing of integral characteristics of Hall Effect Thruster with power consumption less 0,3 kW is substantiated. The main directions of low-power Hall Effect Thruster investigation are considered. The analysis of latest investigations and studies of low-power Hall Effect Thruster showed the existence of three main directions - development of fundamentally new schemes, improvement of existing models, as well as works on study of physical processes features in Hall Effect Thruster with power c

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38

Pinchuk, M. E., A. V. Budin, N. K. Kurakina, and A. G. Leks. "Axial Blast Type Discharge Chamber with Moving Electrode." Plasma Physics and Technology Journal 6, no. 3 (2019): 227–30. http://dx.doi.org/10.14311/ppt.2019.3.227.

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The paper presents some results concerning electrophysical and gas-dynamics parameters of high-curent arc in axial blast discharge chamber. The experimental stand and numerical model were modified for axial gas flow type. Some design changes are described in the paper. The experiments were carried out for gas pressures of 1.0-6.0 MPa with current amplitude of 25-150 kA. The current half-period was of 1.0-10.0 ms. The contacts moved apart to the distance of 3-4 cm due to gas pressure boost in the chamber. OpenFOAM package with the library swak4foam was used for numerical simulation.

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39

Jan, Chyan-Deng, and Quang-Truong Nguyen. "Discharge coefficient for bottom orifice of vortex chamber." Journal of Hydraulic Research 49, no. 3 (2011): 388–91. http://dx.doi.org/10.1080/00221686.2011.572442.

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40

Kitayama, I., H. Sakai, Y. Teramoto, et al. "Optical observation of discharge in resistive plate chamber." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 424, no. 2-3 (1999): 474–82. http://dx.doi.org/10.1016/s0168-9002(98)01379-5.

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41

Хаустова, Алена Николаевна, Андрей Виталиевич Лоян, Олег Петрович Рыбалов та Евгений Иванович Ищенко. "ПРОФІЛОМЕТРІЮВАННЯ КРОМОК РОЗРЯДНОЇ КАМЕРИ СТАЦІОНАРНОГО ПЛАЗМОВОГО ДВИГУНА". Aerospace technic and technology, № 8 (25 грудня 2018): 91–96. http://dx.doi.org/10.32620/aktt.2018.8.14.

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The effectiveness of stationary plasma thrusters was proved by many years of experience of their on board operation on various spacecraft especially on geostationary orbits. One of the main factors that affects the duration of the SPT operation time is the lifetime of the edges of the discharge chamber walls. One of the factors affecting the discharge chamber lifetime is the erosion of the edges of the insulators. Ceramic wear is cause by the destruction of the high-energy ion flow that takes place in thruster plasma.Theoretical study of the processes of discharge chamber insulators sputtering

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42

Mursenkova, Irina V., Igor E. Ivanov, Yugan Liao, and Igor A. Kryukov. "Experimental and Numerical Investigation of a Surface Sliding Discharge in a Supersonic Flow with an Oblique Shock Wave." Energies 15, no. 6 (2022): 2189. http://dx.doi.org/10.3390/en15062189.

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This study presents an experimental and numerical investigation on a surface sliding discharge in a supersonic airflow in the presence of an oblique shock wave. In experiments, flow Mach numbers were 1.20–1.68 in the shock tube combined with the discharge chamber. A single high-voltage 25 kV pulse sustains the plasma; the discharge current has a duration of ~500 ns. A surface sliding discharge is developed as a localized channel in a zone of interaction of an oblique shock wave with a boundary layer on the upper wall of the discharge chamber. The discharge channel acts as a linear source of he

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43

POLYAKOV, D. A., P. A. BATRAKOV, V. A. ZHIGADLO, and K. I. NIKITIN. "SIMULATION OF THE TEMPERATURE FIELD OF THE HEATING SETUP FOR STUDYING THE TEMPERATURE DEPENDENCES OF PARTIAL DISCHARGES CHARACTERISTICS." Actual Issues Of Energy 3, no. 1 (2021): 063–69. http://dx.doi.org/10.25206/2686-6935-2021-3-1-63-69.

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The article describes a study devoted to the development of a heating chamber of the installation for studying the dependences of partial discharge characteristics on temperature. The requirements for the safe operation of the installation have been developed accounting that a cable sample under voltage is placed inside the heating chamber. Geometric models of vertical and horizontal execution of the heating chamber have been built. In the constructed models, the temperature distribution patterns inside the heating chamber are determined. The thermal field on the cable sample surface is the mo

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44

NIGMATZYANOV, Vladislav V., Veniamin A. POGODIN, Lev N. RABINSKIY, Sergey A. SITNIKOV, and Thant ZIN HEIN. "POLYMER PRECURSORS FOR CREATING GAS DISCHARGE CHAMBER FOR ELECTRIC ROCKET ENGINE." Periódico Tchê Química 17, no. 35 (2020): 560–68. http://dx.doi.org/10.52571/ptq.v17.n35.2020.47_nigmatzyanov_pgs_560_568.pdf.

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Electric rocket engines are widely used in space technology. Furthermore, at present, electric propulsion engines are also used as mid-flight engines for flights in interplanetary space. On modern spacecraft, the following types of electric propulsion are mostly used: SPT and grid ion thruster. When using these engines as sustainers, it is important is to increase the total power for obtaining the required thrust and specific impulse. With an increase in total power, the volume of the discharge chamber increases, which leads to technological difficulties in the manufacture of discharge chamber

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45

Tani, Yoshitaka, Yusuke Yamashita, Ryudo Tsukizaki, Kazutaka Nishiyama, and Hitoshi Kuninaka. "Effect of discharge chamber geometry on ion loss in microwave discharge ion thruster." Acta Astronautica 176 (November 2020): 77–88. http://dx.doi.org/10.1016/j.actaastro.2020.05.062.

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46

Lech, Michał, and Paweł Węgierek. "Breakdown Initiation and Electrical Strength of a Vacuum Insulating System in the Environment of Selected Noble Gases at AC Voltage." Energies 15, no. 3 (2022): 1154. http://dx.doi.org/10.3390/en15031154.

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This paper presents the results of testing the electrical strength of an insulating system in a vacuum obtained from three noble gases: argon, neon, helium, and air. The breakdown voltages were measured for contact gaps of 1 mm and 2 mm. A difference was observed in the pressure range where the electrical strength was kept constant. The chamber filled with helium residual gases lost its insulating properties at the highest pressure among the tested gases (2.00 × 100 Pa at contact gap d = 2 mm), while the chamber filled with argon gas lost its insulating properties at the lowest pressure among

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47

Jian, Shi, Li Xin, and Wang Shaoping. "Dynamic Pressure Gradient Model of Axial Piston Pump and Parameters Optimization." Mathematical Problems in Engineering 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/352981.

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The unsteady pressure gradient can cause flow noise in prepressure rising of piston pump, and the fluid shock comes up due to the large pressure difference of the piston chamber and discharge port in valve plate. The flow fluctuation control is the optimization objective in previous study, which cannot ensure the steady pressure gradient. Our study is to stabilize the pressure gradient in prepressure rising and control the pressure of piston chamber approaching to the pressure in discharge port after prepressure rising. The models for nonoil shock and dynamic pressure of piston chamber in prep

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48

Akishev, Yu S., V. P. Bakhtin, A. B. Buleyko, et al. "Formation of Extended Tubular Plasma in Argon at Low Pressure and in a Weak Longitudinal Magnetic Field." Fizika plazmy 50, no. 2 (2024): 239–54. http://dx.doi.org/10.31857/s0367292124020084.

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The results of experimental studies on the formation and subsequent evolution of extended (l = 300 mm) and thin-walled (Δr ≈ 10 mm) tubular (2r ≈ 110 mm) plasma in a weak longitudinal magnetic field (B = 175 G) without the use of a thermionic cathode are presented. The cylindrical chamber in which the tubular plasma was formed was pumped with high purity argon (99.998%) at an average velocity of about 1 m/s at a pressure of P = 10–3– 10–2 Torr. Two methods of creating seed electrons initiating the development of ionization avalanches were used. The difference inherent to these methods has been

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49

Akishev, Yu S., V. P. Bakhtin, A. B. Buleyko, et al. "Formation of Extended Tubular Plasma in Argon at Low Pressure and in a Weak Longitudinal Magnetic Field." Plasma Physics Reports 50, no. 2 (2024): 255–69. http://dx.doi.org/10.1134/s1063780x2460004x.

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Abstract The results of experimental studies on the formation and subsequent evolution of extended (l = 300 mm) and thin-walled (Δr ≈ 10 mm) tubular (2r ≈ 110 mm) plasma in a weak longitudinal magnetic field (B = 175 G) without the use of a thermionic cathode are presented. The cylindrical chamber in which the tubular plasma was formed was pumped with high purity argon (99.998%) at an average velocity of about 1 m/s at a pressure of P = 10–3–10–2 Torr. Two methods of creating seed electrons initiating the development of ionization avalanches were used. The difference inherent to these methods

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50

Bing, Shao. "The Strength Model of Small Parameter Scroll Wrap in a Scroll Compressor." Advanced Materials Research 415-417 (December 2011): 80–84. http://dx.doi.org/10.4028/www.scientific.net/amr.415-417.80.

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The paper analyzed the pressures and the temperatures in compression chambers for calculation of bending fatigue strength , and a strength model is proposed. For the small parameter scroll wraps, the pressure loads are of π-region pressures which have a normal angle interval of π, the number of acting regions for pressure loads is equal to the number of scroll compression chamber pairs. Apart from the part situated in the center compression chamber, the temperatures of scroll wrap decrease linearly with the normal angle. Selecting the reasonable discharge, specifying the appropriate material a

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